ref: 540373b9f603825f27f853a441c6c046a04a0972
dir: /sys/src/cmd/9660srv/dat.h/
typedef struct Ioclust Ioclust; typedef struct Iobuf Iobuf; typedef struct Isofile Isofile; typedef struct Xdata Xdata; typedef struct Xfile Xfile; typedef struct Xfs Xfs; typedef struct Xfsub Xfsub; #pragma incomplete Isofile enum { Sectorsize = 2048, Maxname = 256, }; struct Iobuf { Ioclust* clust; long addr; uchar* iobuf; }; struct Ioclust { long addr; /* in sectors; good to 8TB */ Xdata* dev; Ioclust* next; Ioclust* prev; int busy; int nbuf; Iobuf* buf; uchar* iobuf; ulong tag; /* cache tag for eviction: 0 = data, 1 = metadata */ }; struct Xdata { Xdata* next; char* name; /* of underlying file */ Qid qid; short type; short fdev; int ref; /* attach count */ int dev; /* for read/write */ }; struct Xfsub { void (*reset)(void); int (*attach)(Xfile*); void (*clone)(Xfile*, Xfile*); void (*walkup)(Xfile*); void (*walk)(Xfile*, char*); void (*open)(Xfile*, int); void (*create)(Xfile*, char*, long, int); long (*readdir)(Xfile*, uchar*, vlong, long); long (*read)(Xfile*, char*, vlong, long); long (*write)(Xfile*, char*, vlong, long); void (*clunk)(Xfile*); void (*remove)(Xfile*); void (*stat)(Xfile*, Dir*); void (*wstat)(Xfile*, Dir*); }; struct Xfs { Xdata* d; /* how to get the bits */ Xfsub* s; /* how to use them */ int ref; int issusp; /* follows system use sharing protocol */ long suspoff; /* if so, offset at which SUSP area begins */ int isrock; /* Rock Ridge format */ int isplan9; /* has Plan 9-specific directory info */ Qid rootqid; Isofile* ptr; /* private data */ }; struct Xfile { Xfile* next; /* in fid hash bucket */ Xfs* xf; long fid; ulong flags; Qid qid; int len; /* of private data */ Isofile* ptr; }; enum { Asis, Clean, Clunk }; enum { Oread = 1, Owrite = 2, Orclose = 4, Omodes = 3, }; extern char Enonexist[]; /* file does not exist */ extern char Eperm[]; /* permission denied */ extern char Enofile[]; /* no file system specified */ extern char Eauth[]; /* authentication failed */ extern char *srvname; extern char *deffile; extern int chatty; extern jmp_buf err_lab[]; extern int nerr_lab; extern char err_msg[]; extern int nojoliet; extern int noplan9; extern int norock;